Fire-induced damage in presstressing steels

After a fire, even If no collapse happens, there Is a possibility of fire-Induced damage in the structure. Correct knowledge of residual properties of wires after fire Is of major importance for the assessment of the residual load-bearing capacity of a presfressed structure. This paper studies the non-vlslble fire-Induced damages In presfressed wires, Including the reduction of the prestress bads and the strength of steel wires produced by the exposure to high temperatures